Water rotary union SE 12

for oilfor gasfor air

Product Overview
DSTI SE Series 12-passage rotary unions provide 12 independent fluid passages for compact, high-pressure applications. Models include standard threaded radial connections on the shaft and housing and optional axial O-ring face/flush mounting (specify at order). SE Series units are designed to integrate directly with DSTI electrical slip rings for combined fluid and electrical transfer.

Key Features

• 12 independent flow passages
• Maximum pressure (typical SE option): 7,500 PSI [515 BAR]
• Maximum rotational speed (typical SE option): 300 RPM
• Standard connections: SAE-ORB and BSPP (radial)
• Optional axial O-ring face seals for face/flush mounting (specify at order)
• Shaft and housing material: Carbon Steel (Black Oxide)
• Compatible media: Air/Gas, Coolant, Oil/Hydraulic (petroleum-based), Water/Glycol
• Temperature range (standard seals): 0° F to 220° F [-18° C to 105° C]
• Maximum vacuum: 30 HG
• Optional mounting: Shaft flange mount and housing flange mount
• Can be combined with electrical slip rings for fluid plus power/signal/data transfer

Pressure / Series (summary)

• 200 PSI [15 BAR] — SPS, LT, SE, GP, GPS, SCS, HVH, HPS
• 600 PSI [40 BAR] — SPS, LT, SE, GP, GPS, HVH, HPS
• 5,000 PSI [345 BAR] — SE, GP, GPS, HVH, HPS
• 7,500 PSI [515 BAR] — SE, GP, GPS, HPS
• 20,000 PSI [1,375 BAR] — HPS
• Other — Custom solutions available

Speed / Series (summary)

• 20 RPM — SPS, LT, SE, GP, GPS, SCS, HVH, HPS
• 50 RPM — SPS, LT, SE, GP, GPS, SCS, HPS
• 75 RPM — SPS, LT, SE, GP, GPS, SCS
• 300 RPM — SPS, LT, SE, GP, GPS, SCS
• 500 RPM — SPS, LT, GP, GPS, SCS
• Other — Custom solutions available

Connection Types / Series (summary)

• ASME-BPE — SCS
• BSPP — SE, GP
• BSPT — LT
• NPT — SPS, LT, GP, GPS
• SAE-ORB — SE, HVH
• Medium Pressure — HPS
• Other — Custom solutions available

Part example

• Model: SE-11121 (SEM-11121)
• Connection: #4 SAE-ORB [G1/8"-28 BSPP]
• Passage size: 0.187" [4.75 mm]
• Overall diameter: 3.437" [87.3 mm]
• Overall length: 10.000" [254.001 mm]
• Through bore: 0.375" [9.525 mm]
• Minimum torque to rotate (zero pressure, Oil/Hydraulic): 133 in-lbs [15.03 Nm]
• Downloads: PDF Catalog; PDF Drawing; DWG (2D); STEP (3D); Installation & Mounting PDF

Application & Media Notes

• Suitable for Air/Gas, Coolant, Oil/Hydraulic (petroleum-based) and Water/Glycol.
• Water/Glycol or Coolant must include rust inhibitors; Oil/Hydraulic media must be petroleum-based.
• Operational life depends on rotational speed and duty cycle; high continuous speed or high-temperature use may require alternative seal materials.

Technical specifications

• Series: SE Series
• Passage count: 12 independent passages
• Maximum pressure (typical SE option): 7,500 PSI [515 BAR]
• Maximum speed (typical SE option): 300 RPM
• Maximum vacuum: 30 HG
• Temperature range (standard seals): 0° F to 220° F [-18° C to 105° C]
• Connection types: SAE-ORB (radial), BSPP; optional axial O-ring face seals available
• Shaft connection options: Radial SAE-ORB or BSPP (standard); optional axial O-ring face seal; threaded mounting holes
• Housing material: Carbon Steel (Black Oxide)
• Shaft material: Carbon Steel (Black Oxide)
• Typical media: Air/Gas; Coolant; Oil/Hydraulic; Water/Glycol
• Example model minimum torque (SE-11121): 133 in-lbs [15.03 Nm] (zero pressure, Oil/Hydraulic)
• Mounting interfaces: Shaft flange mount; Housing flange mount; face/flush mounting (specify at order)